Sequence Stratigraphic Correlation of Onshore and Offshore Bight Basin Successions : Southern Australia Regional Project  

Authors / CoAuthors

Totterdell, J.M. | Krassay, A.A.

Abstract

This Record presents a new stratigraphic interpretation of Cretaceous sedimentary rocks encountered in petroleum exploration wells, stratigraphic holes and water bores along the southern Australian coast in Western Australia and South Australia. The Cretaceous succession in these wells is interpreted within the Bight Basin sequence stratigraphic framework, and is correlated with the thicker section farther basinward. The correlation is based on existing and recently commissioned biostratigraphic data, and the interpretation of seismic data on the continental shelf. The onshore wells contain a sedimentary section ranging in age from Valanginian to Campanian, and attributable to the Bronze Whaler, Blue Whale-White Pointer, Tiger and Hammerhead supersequences. The succession reaches a maximum thickness of more than 357 m in the Madura 1 well. The section preserved in these wells records the evolution of depositional environments near the northern margin of the Bight Basin, from areally restricted non-marine deposition in the Early Cretaceous, through increasingly marine, although shallow and anoxic, conditions, to the local development of a small deltaic complex in the Late Cretaceous. Organic-rich non-marine shales of Early Cretaceous age, and Late Cretaceous organic-rich facies of marine affinity have been identified in wells in the study area., providing new information about the nature and extent of potential source rocks in the Bight Basin.

Product Type

document

eCat Id

41956

Contact for the resource

Keywords

• GA PublicationRecord

( Theme )

• sequence stratigraphy

( Theme )

• sedimentary basins

( Theme )

• palaeontology

( Theme )

• organic geochemistry

( Theme )

• geology

( Theme )

• marine

• AU-SA

Australian and New Zealand Standard Research Classification (ANZSRC)

• Earth Sciences

• Published_External

Publication Date

2003-01-01T00:00:00

Creation Date

Security Constraints

Australian Government Security ClassificationSystem    

Classification - unclassified

Legal Constraints

Creative Commons Attribution 4.0 International Licence    

Access - license

Use - license

Status

Purpose

Maintenance Information

unknown

Topic Category

geoscientificInformation

Series Information

Record 2003/002

Lineage

Unknown

Parent Information

Extents

[-36.0, -30.0, 124.0, 133.0]

Reference System

Spatial Resolution

Service Information

Associations

Downloads and Links

Download the Record (pdf)  

Source Information

Source data not available.